Dough package



Sept. i3, 1963 R. J. zoELLER ETAL 3,102,818

DOUGH PACKAGE 4 Sheets-Sheet 1 Filed Jan. 16, 1959 MMM/M7@ OFNEYS Sept. `3, 1963 R. J. zoELLER ETAL 3,102,318

DOUGH PACKAGE Filed Jan. 16, 1959 4 Sheets-Sheet 2 /NVf/vmes @0M/@9J Zaan/.ER

MMM/@wm sept- 3 1953 R. J. zoELLER ETAL. 3,102,818

' DoUGH PACKAGE 4 Sheets-Sheet 3 Filed Jan. 16, 1959 Sept. 3, 19.63 R. J. zol-:LLER ETAL 3,102,813

noUGH PACKAGE Filed Jan. 16, 1959 4 Sheets-Sheet 4 /Nyf/v 70H5 f90/MP0 J. v20.4% L ER MMM/Wim United States yPatent Qce i 3,1L02,81S f `IISOUGI'I PACKAGE Richard J. Zoeller `and James R. Henderson, Louisville, Ky., assignorsto The Pillsbury Company, Minneapolis, AMinn., a corporation of Delaware p Filed Ian. 16, 1959, Ser. No. 737,194

4 Claims. (Cl. 99-172) Y This yinvention relates to a dough package'iand more specically relates to such a package of the type which may be quickly thereof. i

This application is a continuation-impart of our prior co-pending application SN. 565,969, led `February }l6,`

1956, entitled Easily Openable Can, now abandoned.

In the prior art, easily openable containers and dough packages have been known previously. However, in connection wtih the packaging of expansible dough for biscuits and the like, the dough packages have had several distinct disadvantages. One of the more important of these disadvantages is the relatively high cost of manufacturing such" packages. The high cost of manufacturing `has' resulted primarily from the complex constructions ,of` such previously known dough packages, which hasV heretofore lbeen thought necessary in order to adequately confine thedough which,` under certain conditions, develt ops a considerable internal pressure. `Another distinct disadvantage of many of the packages in the prior art in which expansible dough has been stored, lies in `the p construction which makes it quite diicult for the ordinary Another object of our invention is the provision of a and easily opened through the sidewall t novel dough package which may be quickly and easily opened through the use of an absolute minimum of skill by the person desiring to use the contents of the package.

A further object of our invention is to provide a novel and improved doug'hfpack-age which is extremely simple in Aconstruction and therefore may fbe simply and inex- ,y pensively manufactured and which is wholly `adequate in `confining expansible Vdough under normal pressures experienced while the package `is handled in conventional refrigerated equipment and which will be readily and easily f openable by the person desiring to use the dough.

These and other objects and advantages of my invention will more fully appear in connection with the following description made in connection with the accompanying `drawings wherein like reference characters refer to the same parts throughout the several views and in which:

FIG. `1 is a perspective view of the dough package;

` `FIG. 2 is a sectionview taken on a plane extending Alongitudinally through the package and substantially on a diameter thereof, with poritons being broken away to show clarity Iof-detail in the wall construction;

` FIG. 3 is a section viewtaken on a plane extending as indicated at 3-3 in FIG. 1;

diameter thereof, with portions being broken away to show clarity of detail in the wall construction;

FIG. 7 is a section `View taken on a plane extending substantially transversely through the package on -a plane as indicated at 7--7 in FIG. 5;

FIG. 8 is a detail section View taken on `a substantially enlarged scale land on an oblique line substantially at 8 8 in FIG. 5; i

FIG. 9 is a perspective view` of another modified form of the invention;

`IG. 10 is a perspective View showing the rear side of the package of FIG. 9 and also showing portions broken away and in section for clarity of detail;

FIG. 11 is a detail, substantially greatly enlarged, section view taken on a plane as indicated substantiallyat 11-.11 in FIG. 9; i t

FIG. l2 is' a vdetail section view taken along a broken line as indicated at 12-12 in FIG. 9, which line extends generally spirally of the package;

FIG. 13 is a perspective view of another modified for of the invention; Y y l. FIG. 14 is a detail section View taken along aspira-ily extendingline as indicated at 14-14 in FIG. 13;

FIG. 15 is a perspective View, partly in section, and

of the package shown Iin FIG. 13;

along and to exert a `considerable `pressure against the 'enclosure` A11. The enclosure 1l. has can covers I4 crimped on Ithe upper and lower ends thereof in sealed relation with fthe enclosurell so as` to retain the dough` l13 in the chamber 12 and prevent endwise expansion thereof.

The tubular enclosure 11` is constructed of laminate `sheet material of such a nature as to be adapted to be manuallytltorn,` and more specifically, the tubular enclosure ,11 includes a single ply of kraft chipboard `l5 which is relatively stili, but which has bending properties such as to permitformin-g on a spiral mandrelwithout cracking.` The chipboard lamina 15 has `spirall'y extending edge portions 16 cooperatively forming a spirally extending butt joint `17 which extends approximately a full convolution lthroughout the length of the enclosure v 11. The edge portions 16 of the chipboard lamina d5 are in non-adherent engagement with each other at the butt joint 17 and are dispartable with `respect to each other as will hereinafterbe more fully described.

By way 'of example, it has been found satisfactory rto employ as the lamina 15, a 0.026 point bending chipboard of Wet tensile of 45 pounds MD andr13 pounds The tubular enclosure 111 also includes a lining 18` Patented sepas, 1963 and an outerlabel `wrapper :19 which cooperate with each `other in holding the tubular enclosure, and specically V(the chipboard lamina together along the spiral butt joint 17. 'Ihe wrapper 'i191 comprises a, natural kraft paper laminated to athin sheet of aluminum foil, and

` more specifically, by Way of example, it has been found successful toY employ a 60 pound wet strength super calendered natural kraft laminated to a 0.00035 foil, and having wet tensile values of 33 MD and 17 CD (in laminated condition), and alsovhaving a tear strength of 84 MD and 89 CD,` and further having a surface strength of 18;- by Dennison Wax Pick on the kraft zside. 'It` should be understood that the foil lamina of the wrapper :19 is exposed outwardly and vthe'lcraft paper is on the'A inner side, adjacent the chipboard lamina 15.y 'lt will further be understood that thefoil lamina of the wrapper 19 maybe imprinted with suitable copy and coloring for identifying thefgoods. Under certain conditions it vmay ber desirable to increase the thickness of' the foil Y the fornr shown, the y,entire wrapper 19 is non-adhesively relatedto the entire chipboard lamina 15. l

' The -jwrapper 19 is provided withy an elongate tear element -which'extendsalong the spiral butt joint 17 of the chipboardlamfina 15 and is arranged so as to materially weakenfthe wrapper. 19 when torn off. In the particular yforrnof .the invention shown in` FIGS. 1-4, the elongate tear `element 2.0 comprises a `relatively narrow strip ofl hightensile strength kraft paper, underlying the wrapper 119 and adhesively secured to the kraft side of the wrapper 19.' The tear 'element 20 lis non-adhesively related to the edge portions 16 of the chipboard lamina 15 so as tok be adapted to be4 Lreadily torn and removed from the enclosure. The tear element and the wrapper 19..arev

severedl at 21, adjacent the upper end of the package 10 ever, as previously indicated, the lining 18 is substantially moisture-impervious so as to prevent the escape of any moisture from the dough into the chipboard lamina.

Lt has been found suitable to employ a pound liner of tensile strength 27 MD and 15 CD.

In the use and operation of the package k10, understood that the pieces of dough 13 are inserted in the container before one of the lids 14 iscrimpedl on and initially, the pieces of dough 13 will notoccupy the entire space within the chamber 12. However, after the lids have .been crimped on and after` a period oftime, depending upon the temperature, the pieces of dough 13 will expand in such a fashion so as to substantially fill the entire chamber V12. The air will be forced outwardly Vthrough the laminate sidewall of the enclosure 11. As the dough expands, the dough will exert pressure against the inner periphery of the enclosure 11 and under refrigeratedconditions, which are normally used in the storage of Vthe dough package 10, the dough will be confined by the enclosure 11. More specifically, the lining 18 andthe wrapperV 19V cooperate with each other to-hold the enclosure together and to prevent disparting ofthe `chipboard lamina 15 at the spirally extending butt joint 17v thereof.

j vWhenit is ldesired to use the piecesof dough 13, the pull tab 22 will `be manually gripped and the tear element v20 will be torn off the enclosure 11, simultaneously tearing the wrapper 19 so as to materially weaken the wrapper by disparting it, and when the tear element 20 .has

been removed, only the lining 18 holds the enclosure 11 together along the spiral butt joint 17. 4It is preferable,

` that the lining 18 be of such strength so asto necessitate initiation of the disparting thereof by' manual .means,

so as to form a pull tab Z2, facilitating manual gripping of the endportion of the tear element 20, whereby the .tear element may be pulled to weaken by disparting the lwrapper .19 which materially weakens the overall'enclosure I11. l f

It will` be understood that the tear element `20 mayA be constructed of any suitable material having the necessaryitensile strength, but for purposes of the present invention, it has been found that the kraft tear element 20 operates satisfactorily. It should further be understood that the outer aluminum foil lamina of the wrapper 19 might be replaced with a lamina of Saran, polyethyl-y ene, or other lms, which would work, but would be uneconomical as compared Vto the aluminum foil.,

It will be noted that the side edges 23 of the wrapper 19 are disposed in a spirally or helically extending lap joint, wherein the edges are adhesively secured together. j

The lining 18 is constructed of a single lamina of moisture-impervious material which is of Vsufficiently low tensile strength so that the user of the vcanv will have no diioulty in disparting the line at the butt vjoint after the wrapper 19 has been disparted by operation of the tear element 20.' A In the form shown, the lining 18 comprises aV lamination of aluminumfoil which may have an exftremely thin backing of paper to facilitate handling Aof the foil, and the lining 18 is spirally formed and adhesively secured on the inner side ofthe chipboard lamina 15 The and around' 'theentire inner periphery thereof. spirally Vextending lap joint of the edges of the lining 218 is spaced away from the .butt joint 17 of the chipboard lamina, as is vclearly shown in the drawings. The lining :18` will permitsome limited passage of air and oxygen outwardly therethrough as the dough expands in the .chamber 12 so as Ito permit the dough 13 to lill the en- Vtirechamber and leave v-noair pockets therein. Howsuch as by rapping the side of the enclosure on the corner of a table at the butt joint 17 after the strip 20 has beenV removed. VIt has been found that if the package contains biscuit dough which has been maintained under refrig erated conditions, the liner having the strength hereinbefore set forth is substantially ideal to perform the def sired results. EIf the lining 18 is ofinsuicient strength, the lining will dispart prematurely. It should be pointed out that if the lining 18 has too great a strength,rsuch as being constructed of 30 pound foil, the Vpackage willthen beunnecessarily difficult to open because of the substanf tial effort needed to rupture the lining 18 after the strip 20 has been removed.

Itis. important to note, however, that during normal i storage of the package 10, the liner 18 and the wrapper 19 cooperatively hold the enclosure together and resist the ping the enclosure on the edge of a table at the butt Y joint 17, the lining 18 will dispart all along the butt joint 17 under the influence of the internal pressure provided by the expansible dough in the chamber 12. p t.,

The opposite ends of the package 10, adjacent the covers .14, Will then be manually gripped and willbe twisted in opposite directions with respect to each other so as toV widely open the enclosure between the edge portions 16 of the chipboard lamina 15. Access to the pieces of dough 13 is thereby provided, and in fact, most of the pieces of dough will fall out when the package is so twisted.

. In the form of the invention shown in FIGS. 5-8, the

package 30 is of substantially similar construction as that shown in FIGS. 1 4. One of the primary distinctionsl of this form of the invention as compared to that shown in FIGS. 1-4 is the provision of a tear'stringl 31`,of su cient strength asl to tear through the wrapper 32.a1ong'V the butt joint 33 vof the chipboard main body lamina 34.V

lso as to permit disparting of the enclosure 35 and thereby provide access to the piecesk of dough 36" in the interior storage chamber 37. The wrapper. 32 has a die-cut notch it will be 38 at the upper end thereof in the shape of a parallelogram so as to expose the end of the string`31. The wrapper 32 may consist in a natural kraft paper as previously described, to serve as a backing sheet laminated to a foil or rotogravure paper. In this form of the invention the wrapper 32 is glued as at 39 tothe outer surface of the kraft chipboard lamina 34 except along an unglued band 40 which overlies the butt joint 33 in the chipboard lamina 34. The string 31 is glued to the middle of the band so as to extend along the butt joint 33.

The inner lining 41 will consist in a foil laminated to a paper backing sheet and will be of such width as to provide a small overlap at the edges 42 thereof which are spaced from the butt joint 33 of the chipboard lamina 34.

The operation of this form of package is substantially similar to that described in connection with the form of the invention shown in FIGS. 1-4. The lining 41 may it alone is responsible for retaining the pressure of the refrigerated dough in the package and after the entireV strength of the outer wrapper 35 has been removed by tearing through the wrapper through the operation of the string 31. The ends of the enclosure will be twisted in opposite directions relative to each other so as to widely separate the edges of the chipboard lamina 34- and thereby permit the pieces of dough 36 to fall out or be taken out.

The form of the invention shown in FIGS. 9-12 is generally similar to that shown in the other forms of the in vention, and the dough package 45 includes a tubular enclosure 46 constructed of laminate sheet material of the type which may be manually torn, and which is hereinafter more fully described, .and the ends of the ltubular enclosure 46 are closed by covers 47 which are crimped thereon. The package 45 contains a number of pieces of expansible dough 48 which exerts a pressure outwardly against the tubular enclosure 46 and the end covers 47.

The tubular enclosure 46 includes a single ply or lamination 49 of kraft chipboard material of the nature hereinbefore set forth in connection with FIGS. 1-4, and the tubular enclosure also has a paper-backed foil liner 50 which is adhesively secured around the inner periphery of the chipboard lamina `49.

The outer label or wrapper lamina S1 is adhesively secured around the outer periphery of the chipboard lamina 49 and the 4outer lamina 51 may comprise a paper-backed foil. As best seen in FIGS. 9 and 1l, the laminate tubular enclosure may have a lap joint at 52, wherein the edges of the chipboard lamina may be wrapped with strips 53 of foil so as to seal these edges and prevent penetration of moisture thereinto.

In this form of the invention, a number of perforations 55 are provided through the kraft chipboard lamina 49, through the outer paper-backed foil lamination 51 and through the inner paper-backed lining foil lamination l) and the perforations 55 are oriented in a -spiral line extending from one end of the tubular enclosure to the other end thereof and throughout a substantially complete convolution. As a part of the outer label wrapper, an elongate tear element or pull strip 56 is removably adhesively secured on the outer side of the foil 51 in overlying relation with the line of perforations 55 so as to strengthen the tubular enclosure and prevent disparting thereof. Similarly, as a part of the lining 50, a strip 57 of foil is adhesively secured to cover the line of perforations 55. The strip S6 is provided at its upper end with a pull tab 53 which may be manually gripped in order to tear oif the strip 56 and thereby cause material weakening of the tubular enclosure to permit rupturing of the lining and disparting of the tubular enclosure along the spiral line of perforations. Initially, the lining and label laminations cooperate with the bridging portions between the perforations for holding the tubular enclosure together. When the outer strip is removed, the disparting maybe caused 6 to occur by rapping the package on the edge of a table at the line of perforations 55.

In the form of the invention shown in FIGS. 13-16, the package `6l? is quite similar to that shown in FIGS. 9-12. This form of the invention also provides the exterior tear element 61 on the outer surface of the label foil 62 and cooperating therewith to define the wrapper for holding the spiral butt joint 63 of thechipboard lamina 64 together. The foil 62 is provided with a paper back which is adhesively secured to the outer surface of the chipboard lamina 64. The paper-backed foil 62 is also provided with a series of perforations 65 oriented in a spirally extending line along the spiral butt joint 63 so that the tubular enclosure is materially weakened when the tear element 61 is removed.

In this form of the invention, the lining 66 is unbroken at the butt joint 63 and has spirally disposed lapped edges 67 spaced from the butt joint 63.

In operation, removal of the rear element `61 materially weakens the outer label structure and permits disparting along the spiral butt joint 63 when the lining 66 is ruptured, substantially in the fashion of the other forms of the invention.l

:It will, of course, be understood that various changes may be made in the form, details, arrangement and proportions of the parts without departing from the scope of our invention which consists of the matter shown and described herein and set forth in the appended claims.

What we claim is:

l. A dough package including an easily openable container and a quantity of expansible dough therein, ysaid container comprising a tubular enclosure constructed of laminate sheet material capable of being manually torn and having end covers ixedly secured in pressure-sealing relation to the ends of said enclosure to define a closed interior storage chamber containing and confining the dough against expansion, said tubular enclosure including a single lamination of kraft chipboard material weakened along a spirally extending line extending between the ends of the enclosure, said enclosure also having a rupturable lining on the inner side of the chipboard and resisting circumferential disparting of the enclosure, said enclosure also having an outer label wrapper including a kraft paper wrapper layer encompassing and confining the chipboard against expansion at said line and said wrapper layer having an elongate area free from the chipboard and overlying and extending along said line, said label wrapper also including an elongate flexible tear element underlying said layer and secured thereto Within said area, said wrapper layer being unbroken and continuous at said area and operating independently of the tear element but in cooperation with the lining to confine and hold the chip board against separation at said line, said tear element having an exteriorly exposed pull tab, whereby when the tear element is torn off, the lining may be ruptured and the enclosure will dispart along said spirally extending line under the influence of the pressure of the dough and thereby provide access to the dough.

2. The invention set forth in claim 1 and wherein said elongate tear element comprises a tear strip extending spirally along said line.

`3. The invention set forth in claim l wherein said tear element comprises a tear string extending spirally along said line.

4. A dough package including an easily openable container and a quantity of expansible dough therein, said container comprising a tubular enclosure constructed of laminate sheet material capable of being manually torn and having end covers iixedly secured in pressure-sealing relation to the ends of said enclosure to define a closed interior storage chamber containing and conning the dough against expansion, said tubular enclosure including a single ply of kraft chipboard material weakened along a line extending generally endwise and spirally of the enclosure, said enclosure having a rupturable lining on the inner side ofthe chipboard and resisting circumferential disparting of the enclosure, saidy enclosure also having an outer label wrapper including a kraft paper wrapperv layer encompassing and confining the` chipboard against` expansion.` at said line, said wrapper layer also being weakened along said line, and said label wrapper also including a tear strip removably secured on the outer side of said layer and ony opposite sides of said line. andv cooperating with said' lining in holding the layer and chipboard'together against circumferential expansion, whereby when the tear strip is torn off, the liner may be ruptured and disparting ofthe enclosure will occur along said line under theinuence of the pressure in the storage chamber and thereby provide access to the dough.

References Cited inthe file of this patent UNITED STATES PATENTS 2,348,377 Goodyear May9, 1944 2,681,284 Graves June 15, 1.954 2,793,126 Fienup et al; May 21, 1957 2,811,455 Erekson Oct. 29', 1957 2,904,240 Southwellet al Sept. l5, 1959 3,035,753 Erekson May 22, 1962 

1. A DOUGH PACKAGE INCLUDING AN EASILY OPENABLE CONTAINER AND A QUANTITY OF EXPANSIBLE DOUGH THEREIN, SAID CONTANER COMPRISING A TUBULAR ENCLOSURE CONSTRUCTED OF LAMINATE SHEET MATERIAL CAPABLE OF BEING MANUALLY TORN AND HAVING END COVERS FIXEDLY SECURED IN PRESSURE-SEALING RELATION TO THE ENDS OF SAID ENCLOSURE TO DEFINE A CLOSED INTERIOR STORAGE CHAMBER CONTANING AND CONFINING THE DOUGH AGAINST EXPANSION, SAID TUBULAR ENCLOSURE INCLUDING A SINGLE LAMINATION OFF KRAFT CHIPBOARD MATERIAL WEAKENED ALONG A SPIRALLY EXTENDING LINE EXTENDING BETWEEN THE ENDS OF THE ENCLOSURE, SAID ENCLOSURE ALSO HAVING A RUPTURABLE LINING ON THE INNER SIDE OF THE CHIPBOARD AND RESISTING CIRCUMFERENTIAL DISPARTING OF THE ENCLOSURE, SAID ENCLOSURE ALSO HAVING AN OUTER LABEL WRAPPER INCLUDING A KRAFT PAPER WRAPPER LAYER ENCOMPASSING AND CONFINING THE CHIPBOARD AGAINST EXPANSION AT SAID LINE AND SAID WRAPPER LAYER HAVING AN ELONGATE AREA FREE FROM THE CHIPBOARD AND OVERLYING AND EXTENDING ALONG SAID LINE, SAID LABEL WRAPPER ALSO INCLUDING AN ELONGATE FLEXIBLE TEAR ELEMENT UNDERLYING SAID LAYER AND SECURED THERETO WITHIN SAID AREA, SAID WRAPPER LAYER BEING UNBROKEN AND CONTINUOUS AT SAID AREA AND OPERATING INDEPENDENTLY OF THE TEAR ELEMENT BUT IN COOPERATION WITH THE LINING TO CONFINE AND HOLD THE CHIP BOARD AGAINST SEPARATION AT SAID LINE, SAID TEAR ELEMENT HAVING AN EXTERIORLY EXPOSED PULL TAB, WHEREBY WHEN THE TEAR ELEMENT IS TORN OFF, THE LINING MAY BE RUPTURE AND THE ENCLOSURE WILL DISPART ALONG SAID SPIRALLY EXTENDING LINE UNDER THE INFLUENCE OF THE PRESSURE OF THE DOUGH AND THEREBY PROVIDE ACCESS TO THE DOUGH. 